Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China; School of Mechanical and Electronic Engineering, Hangzhou Institute of Electronic Engineering, Hangzhou 310037, China
Abstract General solutions for coupled three dimensional equations of piezoelectric media were used in this work to obtain some analytical solutions for free vibration of piezoelectric annular plates. These solutions not only satisfy the governing equations at every point in the concerned region but also satisfy the prescribed boundary conditions at every point on the boundaries. Therefore, they are three-dimensional exact. Numerical results are finally tabulated.